Electrochemical Fluorescence Switching from a Patternable Poly(1,3,4-oxadiazole) Thin Film

✍ Scribed by Seogjae Seo; Yuna Kim; Jungmok You; Bhimrao D. Sarwade; Prakash P. Wadgaonkar; Shamal K. Menon; Arvind S. More; Eunkyoung Kim

• Publisher: John Wiley and Sons
• Year: 2011
• Tongue: English
• Weight: 618 KB
• Volume: 32
• Category: Article
• ISSN: 1022-1336
• DOI: 10.1002/marc.201000791

✦ Synopsis

Abstract

A highly soluble poly(1,3,4‐oxadiazole) (POD) substituted with long alkyl chains was examined for electrochemical fluorescence switching. The high solubility of the polymers enabled a simple fabrication of an electrochemical cell, which showed reversible fluorescence switching between dark (n‐doping) and bright (neutral) states with a maximum on/off ratio of 2.5 and a cyclability longer than 1 000 cycles. Photochemical cleavage of the oxadiazole in POD allowed photo‐patterning of the POD film upon exposure to UV source. The patterned POD films displayed patterned image reversibly under a step potential of +1.8/−1.8 V. magnified image